Not to be outdone, the Beverly House in Beverly Hills, Calif., is muscling its way into the stratosphere with what is believed to be the most expensive rental home in the nation: a staggering $600,000 a month.

You probably know the house without even realizing it: Remember the scene from "The Godfather" where a Hollywood mogul finds a horse head in his bed? That was filmed at the Beverly House. But the home has an illustrious history beyond that, too: William Randolph Hearst left San Simeon -- the California setting of his never-finished Hearst Castle -- to move into the Beverly House, which paramour Marion Davies bought for him in 1946. And John F. Kennedy honeymooned at the Beverly House with Jackie.

Some vital statistics: The 50,000-square-foot estate, at 1011 North Beverly Drive a few blocks above Sunset Boulevard, has 17 bedrooms and 29 bathrooms on 3.7 acres. The compound includes a guesthouse over an eight-car garage, a security cottage, a separate two-bedroom apartment, a four-bedroom gate lodge, two projection rooms, spa facilities and even an Art Deco nightclub. An outdoor terrace seats up to 400. The billiard room contains a massive stone fireplace mantle brought from San Simeon.